Saturday, January 28, 2012

1D Responses with interference


1.1.       Responses to 1D with interference


Double:
               Redouble: 10+HCP, no fit (at most 3)
               1 of major: NF
               1NT: 6-9 HCP balanced
               2§: Forcing to 2NT
               2¨: 10+ HCP 5¨'s inverted
               2 of Major: Invitational 4 card suit, 5 Diamonds
               2NT: 11-12(13) HCP balanced invitational
               3♣: Invitational, 4 Clubs 5 Diamonds
               3: 0-5 HCP, Pre-empt
               3/3♠/4♣: Splinter, 5+ Diamonds, no major GF 14-15 HCP
               3NT: (13)14-15 HCP balanced
Suit overcall up to 3ª level:
               Double: Negative or a 1-suited force
               1 Major: F1
               1NT: 8-10 plus a stopper
               2§: 10+ HCP Forcing to 2NT
               2: 7-10 HCP 5-card support in ¨
               Cue-bid: limit+ raise
               2 Major: negative free-bid (invitational if a jump)
               2NT: 11-12(13), balanced, Stopper in Opponent's suit
               Jump cue-bid: splinter raise
               3§: negative free-bid (invitational if a jump)
               3: 0-6 HCP 6-card support in ¨, pre-emptive
               3 Major: negative free-bid (invitational if a jump)
               3NT: (13)14-15 HCP, balanced hand with stoppers
Over Natural 1NT overcall Cappelletti
               with a Diamond fit as the main feature shows 1 suited Diamond hand
               Pass: not enough to respond
               Double: Penalties
               2: 1 suited hand in Diamonds/Hearts/Spades
               2: 5+-4+ in majors
               2: Hearts & a minor 5+-5+
               2: Spades & a minor 5+-5+
               2NT: both minors 5+-5+
               3: Clubs
               3: 5+-5+ in majors, GF
Support doubles and redoubles apply after:
               1-P-1-Double or Overcall up to 2♠
               1-P-1♠- Double or Overcall up to 2♠
               Doubles and redoubles are for penalty after a forcing 2/1:
               1-P-2♣- Double or Overcall up to 2♠
               1-P-2¨- Double or Overcall up to 2♠ 
               1-1♠--2©-Double or 2♠ even though 2© is not forcing
               Support doubles and redoubles also apply to: 
               1-1-1♠-Double or Overcall up to 2♠

A squeeze bid is a bid between overcaller’s suit and the partnership’s agreed suit when overcaller made the last bid. Bidding a squeeze suit does not have its normal meaning such as a help suit game try or showing a stopper. Instead, they wish to make an invitational bid and raising the suit would then just be competitive. If a squeeze bid is available then a double is for penalty. However, where there is no squeeze bid available (opponents bid suit below partnership’s major suit) and your side has bid and raised a major suit, maximal doubles apply. For maximal doubles, a double would show an invitational raise. Of course the double could be converted for penalty. Again making a raise where maximal doubles apply would merely be competitive. Doubles are for penalty where partner has passed an opportunity to raise. Maximal doubles also apply where partner has not had an opportunity to raise partner’s suit, such as 1-1-1♠-3-X would show an invitational raise in Hearts.  Maximal doubles and squeeze bids apply up to 3 when Hearts is the agreed suit and the 3 when Spades is the agreed suit.



Overcall of 2 Michaels for the majors

Double shows the ability to penalize at least one suit.

Pass followed by double is penalty in both suits.

2 is GF in Clubs

2 is limit + in Diamonds

2NT is natural

3/3 is natural and competitive

3/3 is a splinter in support of Diamonds



Overcall 2NT for Clubs and Hearts

Double shows the ability to penalize at least one suit.

Pass followed by double is penalty in both suits.

3 is limit+ raise in Diamonds

3 is natural and competitive

3 cuebid shows Spades GF

3♠ is natural and competitive



Overcall 2NT for Minors

Double shows the ability to penalize at least one suit, possibly competitive Diamonds.

Pass followed by double is penalty in both suits, possible limit + raise in Diamonds.

3 is limit+ raise in Diamonds or GF in a Major

3 is natural and competitive

3 is natural and competitive

3♠ is natural and competitive

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